Sliding window.



0. OEHRING.

SLIDING WINDOW.

APPLICATION FILED JAN. 29, 1913 Patented Apr. 14, 1914.

JwWwZazz- 5 %E PATNT QFFTQO OSCAR OEHRING, OF EISLEBEN, GERMANY, ASSIGNOR T0 INTERNATIONALE NEVER FAIL PATENTKURBELFENSTER G. M. B. 1-1., 015 BERLIN, GERMANY.

SLIDING WINDOW.

Specification of Letters Patent.

Application filed. January 29, 1913. Serial No. 744,862.

1' b all coho-m it may concern Be it known that I, Oscar: OEHRING, technical manager, subject of the King of Prussia, residing at Eisleben, Germany, have in vented certain new and useful Improvements in and Relating to Sliding Windows, of which the following is a specification.

My invention relates to improvements in sliding windows in which controllable locking frames are pressed against the windows by means of wedge or oblique slot guides, for the purpose of making said windows tight and at the same time holding them firmly in any desired position. The present forms of construction however have many defects in consequence of which their use, in the main, is limited to ships, where vibrations and joltings are rarely violent. hey would not be satisfactory as applied to the windows of carriages or automobiles for example, which are subject to very severe and uneven j olting on account of the unevenness of the road. The guides in the known constructions whether in the form of wedges or oblique slots must always have a certain amount of play in order that the friction of the sliding pieces may not be excessive, and moreover it frequently happens that during a journey, particularly when the window is open, the frame because of the play is loose and a rattling noise occurs, and it is to overcome these defects that I have devised the present invention.

The present invention also overcomes a further greater defect which exists in that the panes of glass often crack through the slamming of the carriage door even when the panes of glass have cloth or india-rubher-guides. It has been observed that this cracking occurs most frequently in windows without frames or sashes, and also when the windows are half open. The cause of this is the vigorous jolting action, caused frequently by the slamming of the door, which gives the pane of glass a tendency to continue its movement toward the interior of the carriage, after the carriage door has already been closed, but in consequence of the frame, which is rigid, pressing so hard against the immovable frame of the door, the pane of glass with the door forms to a certain extent a rigid whole and therefore must end its movement simultaneously therewith. It will be seen that a breakage is most likely to occur when the window is only half open because in this position it is only surrounded by the frame on three sides, while the fourth and top side is unsupported.

According to the present invention all thesedefects are overcome, the locking frame only being positively raised when the window is opened while when the window is closed and during the closing, said frame is under the action of a spring so that the pane of glass can yield to any severe jolting. Arrangements may be made however for the purpose according to which the pane of glass can be fixed with absolute certainty at any desired height by means of a special locking device so that the frame can be mounted under the influence of a light tension spring and therefore can yield to all the shocks acting on the pane of glass, forin that case it has only to exercise on the latter a pressure suflicient for insuring tightness, not however a pressure of such a degree that the pane of glass becomes jammed in its position. Thereby when the window is opened the frame is positively removed from the pane of glass and allows the latter to be easily raised or lowered. On the other hand when the window is closed the positive wedge effect only continues to a certain extent, viz, up to the final movement of the frame before it is finally pressed against the pane of glass but always under the influence of the spring action. Accordingly the pane of glass is always flexibly seated at the back and the danger of the pane of glass being broken is thus prevented. and any rattling of the pane of glass or of the frame is entirely obviated in any position in consequence of the spring pressure.

In the drawing a few examples of the present invention are illustrated. The first example is illustrated in Figures 1 to 3, Fig. 1 being a transverse section through the frame and door when the frame is in its open position, Fig, 2 the same section showing the guide for the frame with the frame in the closed position. Fig. 3 is a view of the door from the inside of the carriage.

On a movable frame a, guide pins 7) are laterally arranged to slide along the inclined guide ways 0 of guide pieces 9 let into the fixed door-frame (Z. For counter bearings, plate springs e are employed, which press the guide'pins 6 against the oblique surfaces 0 as long as the frame does not press against the pane of glass 'When the frame a is moved down, the pins Z) leave the guide path 0 and the springs a receive the pressure of the frame against the pane of glass and hold the latter in the lowered position. When the frame is raised it is removed again fronrthe pane of glass by means of the oblique guide path a, so that the pane of glass can be easily raised and lowered while the frame itself is held by the pressure of the plate spring and therefore cannot rattle. The plate spring 6 is fixed to the door frame by means of screws it. In the position shown in Fig. 1 the frame is raised and removed from the pane of glass by means of the oblique guides 12 0. If however the frame be lowered into the position shown in Fig. 2, the pins I) slide along the inclined surfaces of the plate springs e and the frame is pressed against the pane of glass, the springs forming a flexible counter bearing for the pins 6 by means of which any excessive increase of pressure or sudden jolting that might act on the pins 6 in the direction of the arrow is compensated. This applies especially when the door is violently closed. The movable'frame can yield to such an extent that the effect of the shock on the pane of glass is compensated and the danger of breakage thus entirely excluded. The window frame is then operated in the usual manner by means of an eccentric shaft 2', the eccentrics 7c of which are seated in the fixed frame and are set in rotation by the turning of a handle Z.

I claim- 1. In combination with a sliding window,

a locking frame adapted to move toward said window in guides inclined to the plane of movement of the window, each of said guides having a resilient side for yieldingly retaining said window in any desired position of adjustment.

2. In combination with a sliding window, a substantially rectangular locking frame adapted to move toward said window in a direction inclined to the plane of movement of the window and, bearing on the marginal edges of the window, retain the same in any position of adjustment, inclined guides for directing the movement of said frame, pins projecting from the frame into said guides, and a spring side to each guide bearing on said pins for yieldingly holding the frame againstsaid window.

In testimony whereof I aflix my signature in presence of two witnesses.

OSCAR- OEHRING. \Vitnesses HENRY Hasrnn, IVOLDEMAR HAUr-r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

